Improvement in the manufacture of enameled leather, cloth



Nrrit Tara's IMPROVEMENT IN THE MANUFACTURE OF ENAMELED LEATHER, CLOTH, 8w.

Specification forming part of Letters Patent No. 42,5841, dated May 3, 1864.

To all whom "it may concern.-

Be it known that we, FRANCES LONGHURST and ALBERT L. MURDOGK, both of the city of Boston, in the county of Suffolk and State of Massachusetts, have discovered and invented a new Process of Manufacturing Patent and Enameled Leather and Cloth, which may be described and explained as follows:

The skins, sides, or pieces of leather or cloth may be preparedandstretched on tables,panels, or frames ina similar manneras is usually practiced in the manufacture of patent-leather or enameled cloth. Then with a knife, brush, or other convenient means said skins, sides, or pieces of leather or cloth are thoroughly and evenly covered on the sides intended to be patented or enameled with a soluble elastic paste or fluid composed of the following-named materials, mixed in whole or in part in variable proportions, boiled, strained, and settled, according" as the quality, climate, or season may rrquire: say about thirty per cent., by welght, each of rosin or pitch, candle-pitch, and naphtha, or an equivalent of the latter in bituminous coal; about one and one-half per cent, by weight, each of sulphur, lamp-black, litharge, gutta-percha, and india-rubber, vulcanized or pure; and about three per cent., by weight, of

linseedoil. Saidskins,sides,orpiecesofleather or cloth are now exposed to a dry atmosphere, in the sunshine, in the open air, or in an oven or room warmed or heated to a temperature of 80 to 170 Fahrenheit. When this first coat is Well dried, which will not ordinarily require more than forty-cight hours, the skins, sides, orrpieces of leather or cloth are to be examined; and if their pores or interstices are perfectly filled and smoothly covered they will be ready to be treated to two or more coats of elastic varnish, as practiced in the best establishments for manufacturingpatcut and enameled leather or cloth in Europe and the United States.

Among the advantages claimed by this discovery and invention are softness and durability of the articles manufactured, their protection from moisture, and freedom from cracking in various climates at all seasons of the year.

What we claim as our discovery and invention, and desire to secure by Letters Patent, is-

To apply as a first coat to leather or cloth in the process of patenting or enameling a sol uble elastic paste or fluid composed of variable proportions of rosin or pitch, candle-pitch, naphtha or bituminous coal, sulphur, lampblack,litharge, gutta-percha, and india-rubber, vulcanized or pure, and linseed-oil, prepared and treated substantially as and for the purposes herein described.

FRANOES LONGHURST. ALBERT L. MURDOOK.

Witn csses:

JOHN T. MoCLURE, JOHN 1%. LEE. 

